JPH07104860B2 - Character processing method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a character processing method,
In particular, the present invention relates to a character processing method applied to a character processing device capable of inputting document information including half-width characters.

[0002]

2. Description of the Related Art In a conventional character processing device, for example, a character processing device for processing Japanese sentences, a half-width character is a numeral, an alphabetic character, for example, a superscript (superscript) such as " ² " in "X ² ", For example, it is necessary to enter a subscript (subscript) such as "2" in "H ₂ O", but the character width is 1/2 of the normal character (full width character). , If there are an odd number of half-width characters in one line, the characters after that may be out of alignment with the lines above or below. If the characters are misaligned in this way, it may be difficult to specify a range that constitutes a part of the document and extends over several lines when the document is edited, for example.

FIGS. 1A and 1B respectively show a display state on a display screen and a printing state on a recording medium when a shift occurs. In these figures, small squares and small rectangles represent full-width characters and half-width characters, respectively.

In FIG. 1A, DISP is a display screen. When the operator desires to perform editing work by designating the area A while referring to the display screen DISP, the area A relating to the editing has a line 1 including an odd number of half-width characters. There are cases where it is not clear whether or not it is included in area A, such as the full-width character C that was applied. That is, the area A cannot be specified.

In FIG. 1B, P is a recording medium. That is, as shown in this figure, the characters are misaligned during printing, which not only impairs the aesthetic appearance of the printed document, but also makes it difficult to read.

[0006]

In order to deal with such misalignment of characters, several systems have been conventionally adopted.

[0007] For example, one of them is a system in which the deviation of characters is left as it is and a special rule is set when the editing range is designated. However, this method
The operator has to be aware of this rule when designating the range or when printing, and thus has a drawback that uniform editing cannot be performed.

As another method, there is a method in which half-width characters are handled in units of two characters to prevent the characters from being misaligned. However, according to this method, when the half-width character being input is an odd-numbered half-width character, the odd-numbered half-width character is input until the next half-width character, that is, the even-numbered half-width character is input. Since the characters are not displayed, it is difficult to insert another character between the set of half-width characters when editing.

The object of the present invention has been made in view of these problems, and particularly when a full width character is overwritten with a half width character, the character string relating to the overwriting and the upper line or the lower line are overwritten. In addition, the purpose is to prevent deviation.

[0010]

In order to solve such a problem, the present invention displays full-width characters and half-width characters input by the input means on the display screen of the display means and displays them on the display screen. Character processing method that indicates the position of full width character that is written and overwrites half width character on the specified full width character
And the specified position is before the full-width character.
If it is a half-width part, replace the character code of the overwritten full-width character with the character code of the half-width character to be overwritten and the specified half- width character code in that order.
If you want to change the character code of
Half width character code, character code of half width character to overwrite
It is characterized by replacing with.

[0011]

According to the present invention, it is displayed on the display screen.
When overwriting the specified full-width characters with half-width characters
If the specified position is the half-width part before the full-width character,
, The full-width character code overwrites the half-width character sentence.
The character code and the specified half-width character code are replaced in this order,
If it is a half-width part after the full-width character, the full-width character
The specified half-width character code,
It is replaced in the order of the character code. Since the full width character code is replaced with the overwriting half width character code and the predetermined half width character code, the characters following the overwritten character will not be shifted by one-byte . Also instructed
The position of the half-width character code to be overwritten changes based on the position.
Therefore, either the left half or the right half of the full-width character
You can also overwrite half-width characters with a simple operation.
It

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings.

FIG. 2 is an overall configuration diagram of a character processing device to which the present invention is applied. That is, the device of the present invention comprises an input means 1 for inputting a full-width character having a predetermined width and a half-width character having a width half the predetermined width, and a storage means 2 for storing character string data. Modify the stored character string,
With respect to the editing means 3 for editing, and the edited character string and the character string input by the input means, the misalignment of the character strings due to the mixture of full-width characters and half-width characters is corrected,
Compensation means 4 to be stored in the storage means 3.

FIG. 3 shows a character processing apparatus to which the present invention is applied.
1 An example is shown. Here, the CPU is, for example, a central processing unit in the form of a microprocessor, performs arithmetic operations for character processing, logical judgments, etc., and accesses these buses via the address bus AB, control bus CB, and data bus DB. Control each connected component.

The address bus AB is a microprocessor CPU
An address signal designating a component to be controlled by is transferred. Control bus CB is microprocessor CP
Transfers and supplies the control signal of each component controlled by U. The data bus DB transfers data between the constituent devices.

The ROM is a read-only fixed memory, and is a microprocessor CP described later with reference to FIG.
Memorize the control procedure by U.

The RAM is a writable random access memory having a structure of 1 word and 16 bits, and is used for temporarily storing various data from each constituent element.

DISK is a magnetic disk device as an external storage of a created document.

KB is a keyboard for instructing various functions to the character processing device, including alphanumeric keys, hiragana keys, katakana keys, and other character and symbol input keys, and keys for specifying the start and end of kanji conversion. With various function keys of.

FIG. 4 shows an example of the structure of a key code of a character input from the keyboard KB. In this example, the key code
Each character has 16 bits. If the character is a full-width character, the most significant bit MSB as shown in (A) in the figure.
Is set to 0 and the code of the full width character is stored in 14 bits from the least significant bit LSB, that is, in the 3rd to 16th bits. For half width characters, the most significant bit MSB is set to 1 and the lower 7 bits represent the half width character code, as shown in (B) in the figure.

Further, in FIG. 3, CBUF is a buffer memory for storing the document data input from the keyboard KB.

FIG. 5 shows an example of the data structure of the buffer memory DBUF. In this example, the buffer memory DBUF is shown in FIG.
It has a data structure corresponding to the key code shown in.
That is, one data D consists of 16 bits, and the most significant bit MSB is "0" that distinguishes full width characters from half width characters.
"" Or "1" is stored, and in the case of full-width character ASC, 14 bits from the least significant bit, that is, the third
Store the character code in ~ 16 bits. Also, half-width characters
For the HSC, allocate the 3rd to 16th bits for the left half width characters and the 10th to 16th bits for the right half width characters, and store the respective codes.

In FIG. 3, CR is a cursor register, the contents of which can be read and written by the CPU. CR to be described later
The T controller CRTC displays the cursor at the position on the display device CRT corresponding to the address stored in the cursor register CR. The cursor register CR expresses display coordinates in half-width units and takes values 0, 1, 2, 3, 4, ....

CRT is a display device using a cathode ray tube,
The display pattern of dots and the cursor on the display device CRT and the display of the cursor are controlled by the CRT controller.

CRT controller CRTC is a cursor register
The contents stored in CR and buffer DBUF are displayed on the display CRT.

CG is a character generator and generates character signals such as characters, symbols and cursors to be displayed on the display device CRT.

The character processing device to which the present invention is applied, which comprises each of the above components, operates in response to various inputs from the keyboard KB. When an input is made from the keyboard KB, the interrupt signal is first transmitted to the center. The central processing unit CPU, which is sent to the processing unit CPU, reads out various control signals stored in the ROM, and various controls are performed in accordance with these control signals.

The contents of the buffer DBUF are displayed on the display device CRT.
Displaying means for displaying in correspondence with the upper position is well known, so its explanation is omitted and document data etc. are simply stored in the buffer DB.
It will be displayed by storing it in the UF.

Next, the outline of the first editing process by the character processing device to which the present invention is applied will be described with reference to FIG. Here, the first editing process is a process of replacing a character existing at the position indicated by the cursor with a full-width character (hereinafter referred to as an overwrite process) and an inserting process. Further, in the following description, left half and right half half-width characters refer to half-width characters located on the left half and right half with respect to the full-width character, respectively.

In FIG. 6, (A) to (F) show display examples in the case of overwrite processing.

In the figures, (A) and (B) show the case where the cursor CM designates a half width character in the left half. In this case, when the full width character "X" is overwritten on the half width character, Indicates that two half-width characters, ie, “B” and “C”, are replaced by one full-width character, ie, “X”.

In the figures, (C) and (D) are the cases where the cursor CM is pointing to the right half width character, and when the full width character "X" is overwritten from the position of the cursor CM, the upper half is left as it is. Since the line and the line below are out of alignment with the character, the position where the cursor CM is located is a half-width blank space.
Indicates to replace with SPC and overwrite full width character "X" from the next character position, ie "E".

In the figure, (E) and (F) indicate the case where the full-width character is overwritten on the full-width character, and it indicates that the characters are replaced in the same manner as (A) and (C) in the figure, respectively. .

In FIG. 6, (G) to (L) show the case of inserting full-width characters.

In the figures, (G) and (H) show the case where the full width character "X" is inserted before the half width character in the left half, that is, "B".

In the figure, (I) is a case where a full width character is inserted before a half width character in the right half. In this case, if you overwrite the full-width character at the position of the cursor, the characters will be out of alignment with the upper line or the lower line, so half-width characters, that is, "C" and full-width characters , In this case, add a half-width blank SPC between “X”. In addition, the number of half-width characters after the inserted full-width character “X” will be an odd number, so that there is also a half-width character between the half-width character, that is, “F” in this case A blank SPC is added to correct the deviation.

In the figure, (J) is a case where a full width character is inserted before the half width character in the right half and a case where a blank for correction is added after the half width character. Even in this case,
Similar to (C), (D) and (G) in the figure, half-width blank SPCs are added to insert full-width characters, but the number of half-width characters after the inserted character is an even number. So, the half-width blank that existed before the insertion, ie "E" and "K" in this case
Remove the blank SPC that existed between and.

In the figure, (K) and (L) indicate the case where the full-width character "X" is inserted on the full-width character, that is, when the cursor CM is located at the position "B" in this case. In the figure, the same processing as (G) and (I) is shown.

FIG. 7 is a flowchart showing an example of the first editing processing procedure.

First, in step S7-1, the full-width character is
When one character is input, in step S7-2, it is checked whether the input character is to be overwritten or inserted. If it is overwriting, go to step S7-13. If it is insertion, go to step S7-3. move on.

In step S7-3, it is determined whether the cursor is on the left half or the right half of the full width character. This determination is made by referring to the contents of the cursor register CR. That is, if the content of the cursor register CR is even, that is, if the cursor is in the left half, proceed to step S7-10.If the content of the cursor register CR is odd, that is, if the cursor is in the right half, proceed to step S7-10. Proceed to S7-4.

In step S7-4, it is determined whether the character pointed by the cursor is a full-width character or a half-width character. This determination is made by referring to the most significant bit MSB of DBUF of the buffer corresponding to the cursor. That is, if the character pointed by the cursor is a full-width character, step S7-9
If it is a half-width character, proceed to step S7-5.

In step S7-5, it is determined whether the half width character before the first full width character after the half width character designated by the cursor is a blank SPC. If the character is a half-width blank SPC, step S7-8, blank SP
If it is not C, the process proceeds to step S7-6.

In step S7-6, the character string from the first full-width character after the half-width character designated by the cursor to an appropriate division is shifted by one full-width character. In addition, the first half-width characters up to the full-width character are shifted by one half-width character.

Subsequently, in step S7-7, a half-width blank SPC is added to the space for one half-width character generated between the full-width character and the half-width character by this processing. This gap is created by shifting the half-width character by one half-width character, and it occurs at the beginning (position of the cursor) and the end of the half-width character string.

In step S7-8, the last blank space in the half-width character string is removed, and the character string up to one character before the blank space after the half-width character pointed by the cursor is shifted by one half-width character, and then step S7- Proceed to 7.

In step S7-9, the cursor is advanced by one half-width character. This is done by incrementing the contents of the cursor register CR by one.

In step S7-10, the character string from the character pointed by the cursor to the proper delimiter
Shift after a character. Any character information may be stored in the buffer DBUF corresponding to the gap of the position indicated by the cursor generated thereby.

In step S7-11, the full-width character input to the buffer DBUF corresponding to the character position designated by the cursor is stored.

In step S7-12, the cursor is advanced by one full width character. This is done by incrementing the contents of the cursor register CR by +2. With this process,
Terminates the process when one full-width character is input.

When the overwrite processing is performed, it is determined in step S7-13 whether the character pointed by the cursor is a full-width character or a half-width character. This determination is made by referring to the most significant bit MSB of the buffer DBUF corresponding to the cursor. If the character pointed by the cursor is a full-width character, the process proceeds to step S7-11, and if it is a half-width character, the process proceeds to step S7-14.

In step S7-14, it is determined whether the cursor is in the left half or the right half of the full width character. This judgment is made by referring to the contents of the cursor register CR. That is, if the content of the cursor register CR is even, that is, if the cursor is in the left half, proceed to step S7-11, and if the content of the cursor register CR is odd, that is, if the cursor is in the right half, step S7-15.
Proceed to.

In step S7-15, the half-width character designated by the cursor is replaced with a half-width blank SPC.

In step S7-16, the cursor is advanced by one half-width character. This is done by incrementing the content of the cursor register CR by +1. After the end of this processing, the flow shifts to step S7-11.

Next, with reference to FIG. 8, an outline of the second editing processing procedure by the character processing device to which the present invention is applied will be described.

Here, the second editing process is a process of overwriting and inserting a half-width character to a full-width character or a half-width character existing at the position indicated by the cursor.

As shown in (A) in the figure, in the overwrite processing when the cursor CM is in the left half of the full width character "L", the half width character input at the position designated by the cursor, that is, this Display "X" and add a half-width SPC to the right half.

As shown in (B) in the figure, in the overwrite process when the cursor CM is in the right half of the full-width character "L", a half-width blank SPC is added to the left half and the right half is added. Displays the half-width character "X" that you entered.

As shown in (C) in the figure, in the overwrite processing when the cursor CM is pointing to the half-width character "M", the half-width character "X" input at the position indicated by the cursor CM To be displayed.

As shown in (D) in the figure, when the cursor CM is in the left half of the full-width character "L", the insertion process is performed by the character "L" indicated by the cursor CM and the character "K" before it. ", And add a half-width blank SPC to the inserted half-width character" X ".

As shown in (E) in the figure, when the cursor CM is in the right half of the full width character "L", the insertion processing is performed by the character "L" indicated by the cursor CM and the character "M" next to it. ", And add a half-width space to the inserted half-width character" X ".

As shown in (F) in the figure, the cursor CM indicates a half-width character, and the one-width character before the first full-width character after the half-width character, that is, the half-width character existing at the end of the half-width character string is In the insertion process when it is not blank,
Insert the entered character "X" between the character "L" at the cursor CM and the character "K" before it, and add a half-width blank SPC to the end of the half-width character string.

As shown in (G) in the figure, the cursor CM indicates a half-width character "L", and the last character of the half-width character string is blank.
In the insertion processing in the case of SPC, the blank SPC is removed and the input character "X" is inserted between the character "L" of the cursor CM and the character "K" before it.

In any of these cases, after the overwrite processing or the insertion processing, the cursor CM is moved backward by one character.

Next, with reference to FIG. 9 to FIG.
The editing process of will be described in detail. FIG. 9 is a flow chart showing an example of the second editing processing procedure, FIGS. 10 and 11 are explanatory views for explaining the data storage state of the buffer memory according to the cursor pointing position in the overwrite processing of half-width characters, and FIG. It is explanatory drawing which shows the state which replaces 1 full-width character with 2 half-width blank characters, and stores it in a buffer memory in the process of processing.

First, when one half-width character is input in step S9-1, it is checked in step S9-2 whether the character is overwritten or inserted, and if it is overwritten, step If it is an insertion process, the process proceeds to step S9-4.

In step S9-3, it is determined whether the character pointed by the cursor CM is a full-width character or a half-width character. This determination is performed by referring to the most significant bit MSB of the buffer DBUF corresponding to the cursor. And the cursor
If the characters indicated by the CM are half-width characters, step S9
-9, in case of full-width character, the process proceeds to step S9-8.

In step S9-9, the input half-width character is stored in the buffer DBUF corresponding to the cursor position.
If the value of the cursor register CR is an even number, that is,
As shown in 0, when the cursor CM is located at the position corresponding to the left half of the full-width character, the code of the input half-width character "X" is stored in the 3rd to 9th bits of the buffer DBUF. When the value of the cursor register CR is an odd number, that is, when the cursor CM is at the position corresponding to the right half of the full width character as shown in FIG. 11, the code of the input half width character “X” is stored in the buffer DBUF. Stored in the 10th to 16th bits of.

In step S9-10, the cursor CM is advanced by one half-width character. This is the cursor register CR
It is performed by incrementing the value of by +1. This step S9-10
With the processing in step 1, the processing procedure when one half-width character is input ends.

In step S9-8, one full-width character designated by the cursor CR is replaced with a half-width blank SPC character. This is done by setting the most significant bit MSB of the buffer corresponding to the cursor position to "1" as shown in FIG.
This is done by storing the code corresponding to the half-width blank SPC in the 3rd to 9th bits and the 10th to 16th bits.

When performing the insertion process, step S9-4
In, it is determined whether the character pointed by the cursor is a full width character or a half width character. This judgment is made by referring to the most significant bit MSB of the contents of the buffer corresponding to the cursor position. If it is determined to be full-width characters, the process proceeds to step S9-5, and if it is determined to be half-width characters, the step is performed.
Continue to S9-11.

In step 9-5, it is determined whether the cursor CM is at the right half position or the left half position of the full width character. This determination is made by referring to the contents of the cursor register CR. If the content of the cursor register CR is even, that is, if the cursor CM is in the left half, step S9
-7, if the content of the cursor register CR is odd, that is, if the cursor CM is in the right half, proceed to step S9-6.

In step S9-6, the cursor CM is advanced by one half-width character. This process is performed by cursor register CR
It is performed by incrementing the value of by +1.

In step S9-7, the character string from the character designated by the cursor CM to the appropriate delimiter is shifted backward by one full width character. This is the buffer DB
It is performed by shifting the contents of UF by one full width character. After this process, any full-width character information may be stored at the position indicated by the cursor CM.

In step S9-11, it is determined whether or not the half width before the full width character first existing after the half width character indicating the cursor is the half width blank SPC. If it is a half-width blank SPC, proceed to step S9-14 and enter a blank SP.
If not C, proceed to step S9-12.

In step S9-12, the character string from the first full width character after the half width character designated by the cursor CM to an appropriate division is shifted to the position after one full width character,
The half-width character string existing up to the full-width character is shifted back by one half-width character.

At step S9-13, a half-width blank SPC is added to the space for one half-width character generated between the full-width character and the half-width character by such processing.

In step S9-14, the blank SPC that is one character before the first full-width character after the half-width character designated by the cursor CM is removed, and one character before the half-width blank SPC that is removed after the character pointed by the cursor. Half-width characters 1
Move backward by each character.

After the processing of steps S9-8, S9-13 and S9-14 is completed, the process proceeds to step S9-9.

In the above-mentioned embodiment, the input is performed from the keyboard, but the input device is a tablet,
Any form such as an optical character reader (OCR) or an online character recognition device can be used as long as the input character can be obtained together with the character width information.

Further, in the embodiment, a blank is added as needed, but this is
The form of the character does not matter as long as it is not displayed or printed. Further, in the embodiment, when the cursor is in the right half of the full-width character, the insertion is performed after advancing the cursor by one, but it is said that the insertion is performed before the character pointed by the cursor (on the left side). The method can be unified.

Further, in the embodiment, the cursor is displayed with a half width. However, when the cursor is a full width, it may be regarded as a cursor existing in the left half.

Further, in the above-mentioned embodiment, only the processing related to editing such as character overwriting or insertion is shown, but it can be easily applied to the case of inputting (creating) this document.

In the embodiment, in the overwrite processing when the cursor is in the right half, the input character is positioned in the right half and the added space is positioned in the left half.
The input character may be positioned in the left half and the added space may be positioned in the right half. Similarly, for the insertion process when the cursor is in the right half, it is possible to position the input character in the right half and the space in the left half.

Further, in the overwrite processing in the embodiment, two half-width characters are replaced with one full-width character.
The characters may be replaced with one full-width character.

Furthermore, the insertion process can be performed in reverse, and the invention can be applied to the process of deleting half-width characters.

[0087]

As is apparent from the above description, according to the present invention
In the case of overwriting the full width characters in half width characters, since replaced by the character code of the half width characters character code of full width character is overwritten with a predetermined half width character code, overwrites
Character following the characters can be prevented from being shifted half-width. For this reason, even if full-width characters are overwritten with half-width characters, there will be a half-width gap between the characters in the character string that follows the overwritten character and the characters in the columns above and below that character string. Absent. Therefore, it is possible to prevent the aesthetic appearance and readability of the printed document from being impaired by the overwriting. In addition, the first half width part of the full width character is specified and the half width character becomes
If overwritten, overwrite the character code of full-width characters.
The half-width character code, the specified half-width character code
, And the half width part of the latter half of the full width character is specified.
And half-width characters are overwritten, the full-width character
Character code of the specified half width character, half width to overwrite
Since it is replaced in order of the character code of the character, before the full width character
Half- width characters can be displayed in either the half or the second half position .

[Brief description of drawings]

FIG. 1 is a diagram showing a display state and a printing state when a character string is displaced due to a mixture of full-width characters and half-width characters in a conventional character processing device, respectively.

FIG. 2 is an overall configuration diagram of a character processing device to which the present invention is applied.

FIG. 3 is a block diagram showing one embodiment of a character processing device to which the present invention is applied.

FIG. 4 is a diagram showing a configuration example of a character key code.

FIG. 5 is a diagram showing a data configuration example of a buffer memory as a storage unit.

FIG. 6 is an explanatory diagram illustrating an outline of first editing processing by the character processing device to which the present invention is applied.

FIG. 7 is a flowchart showing an example of a procedure of the first editing process.

FIG. 8 is an explanatory diagram illustrating an outline of second editing processing by the character processing device to which the present invention is applied.

FIG. 9 is a flowchart showing an example of a procedure of a second editing process.

FIG. 10 is an explanatory diagram illustrating a data storage state of a buffer memory according to a cursor pointing position in overwrite processing of half-width characters in the second editing processing procedure.

FIG. 11 is an explanatory diagram illustrating a state of data storage in a buffer memory according to a cursor designated position in overwrite processing of half-width characters in the second editing processing procedure.

FIG. 12 is an explanatory diagram illustrating a state in which one full-width character is replaced with two half-width blank characters and stored in the buffer memory in the second edit processing procedure.

[Explanation of symbols]

 1 Input Means 2 Storage Means 3 Editing Means 4 Correcting Means CPU Central Processing Unit KB Keyboard DBUF Buffer Memory ROM ROM Read Only Memory CRT Display Device CR Cursor Register

Claims (1)

[Claims] 1. A full-width character and a half-width character input by the input means are displayed on a display screen of the display means, the position of the full-width character displayed on the display screen is designated, and the designated full-width character is displayed. Character processing method to overwrite half width characters
It is a law, and the specified position is the half width part before the full width character.
In some cases, the character code of the full width characters overwritten, half width character code to overwrite, the predetermined half width character code
Replace in order, if it is the half width part after the full width character,
Change the written full-width character code to the specified half-width character
Replace the character code of the half width character
Character processing method characterized by that.